Basic Help

I know this is probably pretty basic but I just started. I am using FSDS V3 and when trying to create a library it seems I am missing a GUID. How do I assign that or get one for my model? The error is as follows:

I hope this is in the right spot. Thanks!

Parsing document: library_creator_xml_temp_compile.xml

ERROR C2033: XML Parse Error (line, column, error)

ERROR: 2, 51, Error parsing '' as hexBinary datatype.

The attribute: 'name' has an invalid value according to its data type.